Adjustable stop for window regulators



Sept. 30 1924.1

" P. J. KURSCHEIDT ADJUSTABLE STOP FOR wnmow REGULATORS Filed Feb. 27, 1922 Patented Sept. 30, 1924.

UNITED STATES PATENT OFFICE.

PETER JOHN KURSGHEIDT, OF BROOKLYN, NEW YORK, ASSIGNOR TO PERFECT WIN- DOW REGULATOR OOMZPANY, OF NEW YORK, N. Y., A CORPORATION OF MAINE.

ADJUSTABLE STOP FOR WINDOW REGULATORS.

Application fil ed February 27, 1922. Serial No. 539,371.

To all whom it may concern Be it known that 1, PETER JOHN KUR- sorrnmr, a citizen of the United States, and a resident of Brooklyn in the county of Kings and State of New York, have invented certain new and useful Improvements in Adjustable Stops for WVindow Regulators, of which the following is a specification.

My invention relates to window regulators or lifts for raising or lowering a window and it is particularly adapted for use in that type of regulators now well known in the art and employing two sprockets or other rotatable members, a chain or other linear member running thereover, a handle or other means for rotating the sprockets and a connection between the chain and the window whereby the window is raised or lowered as desired upon rotation of the handle.

The principal object of the invention is the production of a novel and simple stop which may be detaohably connected to the chain and by means of which the window is prevented against further movement in the same direction after it has reached any given position.

Other and further objects and advantages of the invention will appear from the accompanying description, the invention consisting in the novel parts and combinations thereof hereinafter more particularly described and then specified in the claims.

In the accompanying drawing showing a practical embodiment of the invention:

Fig. 1 is a front elevation of a window regulator showing my invention in 'conjunction therewith.

Fig. 2 is a side elevation of a port-ion of the chain with the adjustable stop detachably fastened thereto.

Fig. 3 is a vertical cross-section on the line 33 of Fig. 2.

Fig. 4 is an end View of the stop.

Fig. 5 is a front elevation of a modification.

Fig. 6 is a vertical cross-section on the line 6 6 of Fig. 5.

Referring to the drawing:

1 indicates a window which is adapted to he reciprocated vertically in a suitable frame the lower part of which is indicated at 2. A plate 3 is secured to the frame 2 and is provided with an upper sprocket 41- mounted thereon. 5 indicates a bar or strap which is fastened to the plate 3 and on which a lower sprocket 6 is mounted. The bar or strap 5 is held against movement by a crossbar 7 secured thereto, the ends of said crossbar being fastened to the frame of the window well or other support.

8 indicates an endless chain which passes over the sprockets 4- and 6, the links of said chain being provided with slots 9 extending therethrough. A roller stud support 10 provided with an extension 11 is fastened to said chain and carries a roller stud 12 engaging in an open slot 18 of a plate 14L which is. fastened to and depends downwardly from the lower edge of the window 1. By rotating a handle 15 which is operatively connected with the upper sprocket 4 the chain is caused to travel around the sprockets 4- and 6 and the window is thus raised or lowered according to the direction of rotation given the handle in an obvious manner now well known and requiring no detailed description.

When the window has reached its extreme uppermost position it is desirable to provide some positive means which will prevent a further movement of the window otherwise a continued rotation of the handle 15 would be apt not only to tilt the window but in some cases to force the roller stud 12 completely out of the slot 13. Accordingly I have provided the plate 3 with a projection 16 which preferably is a portion of the ma terial of the plate itself out out and bent over in a plane transverse to the plane of the plate. When the window has reached its upper or closed position the extension 11 of the roller stud support 10 engages the pro jection 16 as shown in Fig. 1 and further movement of the handle or window in the same direction is thereby prevented.

It is also desirable to provide some means for preventing a forcing of the stud 12 out of the slot 13 if rotation of the handle in the same direction is attempted after the window has been opened or has reached its lower position. This is accomplished Lil by the provision of an adjustable stop shown in detail in. Figs. 2, 3 and 4:. This stop comprises a head 17 and spring arms 18 preferably integral thereivith, said parts forming a U-shaped member. The arms 18 are provided with side flanges l9 and which may be integral therewith and which are bent over in parallelism and at right angles to the arms as shown in I 3. The ends of the arms are bent inwardly to form gripping members 20' adapted to engage within the slots 9 01": any of the links of the chain. To mount the stop on the chain the arms are spread apart and the members 20' inserted in the slots 9 of one of the chain links. screw 21 is then threaded through suitable openings in the flanges 19 and 20 which, as is OlJVlOdES, keeps the arms from spreading outwardly and prevents removal of the members $20 from the slots 9 until the screw is removed. Inasmuch as said members interlit snugly with said slots a rocking of the device on the chain is prevented. IV hen the stop applied to the proper link the end o1 the screw will strike the projection 16 of the plate 3 as shown in dotted lines in Fig. l and thereby prevent a further downward movement or the window or a rotation of the handle in the same direction.

Inasmuch. as the stop may be applied to any link of the chain it is obvious that it may be positioned so as to function when the window has been partially opened only or before it has reached its extreme lower position. If a liner adjustment is desired than can be obtained by shifting the stop from one link to another this may be so cured by screwing the screw 21 further through the flanges 19 and 20 or unscrewing the same so as to vary the distance between the end of the screw and the projection 16. The tendency oi the spring arms 18 to spread outwardl moreover, serves to securely hold the screw in any desired adjusted position without the necessity of employing an additional lock 11 t.

In the modification illustrated in Fig and G the chain links are provided wit i annular openings 22 extending therethrough instead of with slots as in the preferred form of the invention. These openings are adapted to receive lugs pressed in the lower portions of the spring arms of the stop. i 'l hen the modified device is in position on one of the chain links the lower edges of tie flanges 19, 20 seat on or just clear il l op of the chain link to prevent rocking the stop.

li hat I claim as my invention is 1. In a window regulator, a sprocket, a chain running thereover for transmitting motion to the window, a projection and a stoo detachably fastened to said chain and gage said projection for preanaoted to on venting movement of the window beyond any given predetermined position in its travel.

In a window regulator, a sprocket, a chain running thereover for transmitting motion and provided with a. plurality ol slots therein at spaced intervals, at projection and a detachable stop engaging within a slot of said chain and adapted to engage said projection :lior preventing movement of the window in one direction.

In a window regulator, a sprocket, a chain running thereover for transmitting motion to the window, a projection and a detachable stop adapted to engege said projection for preventing movement of the window in one direction, said stop being provided with spring arms gripping the chain and means tor holding said arms in gripping engagement.

il. In a window regulator, a sprocket, a chain running tliereover for transmitting motion to the window, a projection and a stop, said slop having arms deta Whably gripping the chain and a member carried by said stop adapted to engage said projection for preventing i'novement of the window in one direction.

In a window regulator, a sprocket, a chain running thereover 'lor ti'aiismitting motion to the window, a projection and a stop, said stop having arms detachably cngaging the chain and a screw carried by said stop adapted to engage said projection for preventing movement: of the window in one direction.

6. In a window regulator, a sprocket, a chain running thercover for transmitting motion to the window, a projection and a stop, said stop having arms dctachably en gaging said chain and. a screw carried by said step adapted to engage said projection for pr-venting movement; of the window in one direction, said arms acting to resist a movement of said screw.

7. In a window regulator, a sprocket, a chain running thcreovcr tor transmittin motion to the wii'idow and provided \viti slots therein, a projection and a stop. said stop having arms entering said slots and. a. screw to]: holding said arms within said slots and adapted to enga 're said projection to prevent movement of the window in one direction.

8. In a window regulator, a sprocket, a chain running thcrei'ivcr for transmitting motion to the window, a projection and a stop, said stop having spring arms detachably connected to said chain, flanges on said arms and a screw threading through said flanges for holding said arms in engagement with said chain and adapted to ensaid. projection to prevent movement of the window in one direction.

9. In a window regulator, a sprocket, a

chain running thereover for transmitting Signed at New York in the county of motion to the Window, a projection and a New York and State of New York this 25th 1 stop, said stop being adapted to eagage said day of February A. D. 1922.

no'ection to revent movement 0 the Winr iiov in one direction and comprising a U- PE FER JOHN KURSCHEIDT' shaped member having arms detachably con- Witnesses:

nected to said chain and means for holding THEODORE A. HACK, said arms in connected position. MARTIN Oi MUELLER. 

